Karabiner Elements Finder Improved Navigation

finder-navigation-karabiner.json

{
    "title": "Finder improved navigation",
    "rules": [
        {
      "description": "Use F2 as Rename and set onedit",
      "manipulators": [
        {
          "type": "basic",
          "from": {
            "key_code": "f2"
          },
          "to": [
            {
              "key_code": "return_or_enter"
            },
            {"set_variable": 
                        {
                        "name": "onedit",
                        "value": 1
                        }
                    }
          ],
          "conditions": [
            {
              "type": "frontmost_application_if",
              "bundle_identifiers": [
                "^com.apple.finder"
              ]
            }
          ]
        }
      ]
    },
{
    "description": "Use Backspace as Go to Previous Folder in Finder if not onedit",
    "manipulators": [
        {
            "conditions": [
                {
                    "bundle_identifiers": [
                        "^com.apple.finder"
                    ],
                    "type": "frontmost_application_if"
                },
               {
                    "name": "onedit",
                    "type": "variable_if",
                    "value": 0
                }
            ],
            "from": {
                "key_code": "delete_or_backspace"
            },
            "to": [
                    {
                        "key_code": "semicolon",
                        "modifiers": [
                            "left_command"
                        ]
                    }
                ],
            "type": "basic"
        }
    ]
},
{
    "description": "Use Return as Open if not renaming file",
    "manipulators": [
        {
            "conditions": [
                {
                    "bundle_identifiers": [
                        "^com.apple.finder"
                    ],
                    "type": "frontmost_application_if"
                }
                ,
                {
                    "type": "variable_unless",
                    "name": "onedit",
                    "value": 1
                }
            ],
            "from": {
                "key_code": "return_or_enter",
                "modifiers": {
                    "optional": [
                        "any"
                    ]
                }
            },
            "to": [
                {
                    "key_code": "o",
                    "modifiers": [
                        "right_command"
                    ]
                }
            ],
            "type": "basic"
        }
    ]
},
{
    "description": "Use Return to finish renaming when onedit=1",
    "manipulators": [
        {
            "conditions": [
                {
                    "bundle_identifiers": [
                        "^com.apple.finder"
                    ],
                    "type": "frontmost_application_if"
                },
                {
                    "name": "onedit",
                    "type": "variable_if",
                    "value": 1
                }
            ],
            "from": {
                "key_code": "return_or_enter",
                "modifiers": {
                    "optional": [
                        "any"
                    ]
                }
            },
            "to": [
                {"key_code": "return_or_enter"},
                {"set_variable": 
                    {
                    "name": "onedit",
                    "value": 0
                    }
                }
            ],
            "type": "basic"
        }
    ]
},
{
    "description": "Use Esc to finish renaming when onedit=1",
    "manipulators": [
        {
            "conditions": [
                {
                    "bundle_identifiers": [
                        "^com.apple.finder"
                    ],
                    "type": "frontmost_application_if"
                },
                {
                    "name": "onedit",
                    "type": "variable_if",
                    "value": 1
                }
            ],
            "from": {
                "key_code": "escape",
                "modifiers": {
                    "optional": [
                        "any"
                    ]
                }
            },
            "to": [
                {"key_code": "escape"},
                {"set_variable": 
                    {
                    "name": "onedit",
                    "value": 0
                    }
                }
            ],
            "type": "basic"
        }
    ]
}
    ]
}